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  • Wisteria macrostachya (Kentucky wisteria)

    Kentucky wisteria growing on a trellis.

    Also known as:

    Kentucky wisteria, Kentucky wistaria
    Kentucky wisteria is native to parts of North America. This species produces hanging clusters of purple flowers. It is a good alternate to the Japanese and Chinese wisterias that have become invasive in some areas. Also known as Wistaria frutescens var. macrostachya.

    Size Range:

    • Large plant (more than 24 inches)

    Light Exposure:

    • Full sun (6 hrs direct light daily),
    • Partial sun/shade (4-6 hrs light daily)

    Native Locale:

    • Illinois,
    • North America
  • Wisteria sinensis (Chinese wisteria)

    Chinese wisteria growing on a fence.

    Also known as:

    Chinese wisteria
    Chinese wisteria is a beautiful vine in flower, but it is an aggressive grower and is considered invasive in some areas, especially in the southern United States. Review of risks should be undertaken before selecting this vine for planting sites.

    Size Range:

    • Large plant (more than 24 inches)

    Light Exposure:

    • Full sun (6 hrs direct light daily),
    • Partial sun/shade (4-6 hrs light daily)

    Native Locale:

    • Non-native
  • Xanthorhiza simplicissima (Yellowroot)

    Also known as:

    Yellowroot
    Yellowroot is a small woody perennial forming a dense carpet that reaches 1 to 3 feet high. This east coast native is found in damp woods, stream banks and wet depressions. The best feature is the yellow to red to purple fall color.

    Size Range:

    • Low-growing shrub (under 3 feet),
    • Large plant (more than 24 inches)

    Light Exposure:

    • Full sun (6 hrs direct light daily),
    • Partial sun/shade (4-6 hrs light daily),
    • Full shade (4 hrs or less of light daily)

    Native Locale:

    • North America
  • Yucca filamentosa (Yucca)

    Also known as:

    Yucca, Adam's needle yucca, Adam's needle, Spanish bayonet
    Yucca is a drought-tolerant shrub with stemless, stiff evergreen leaves that end in a narrow point. In late spring a 3- to 6-foot stalk appears with cluster of white, bell-shaped flowers.

    Size Range:

    • Low-growing shrub (under 3 feet),
    • Large plant (more than 24 inches)

    Light Exposure:

    • Full sun (6 hrs direct light daily),
    • Partial sun/shade (4-6 hrs light daily)

    Native Locale:

    • North America
  • Zanthoxylum americanum (Prickly-ash)

    Dark green compound leaves of prickly-ash

    Also known as:

    Prickly-ash, Prickly ash, Pricklyash, Toothache tree
    Prickly-ash is a tall, colony-forming small tree or large shrub reaching 15 to 25 feet tall and wide. Twigs and stems are covered in 1/2 inch prickles making it difficult to use in the landscape. In spite of its common name, it is not related to Ash trees (Fraxinus spp.) of the Olive family. Rarely found in the nursery trade.

    Size Range:

    • Small tree (15-25 feet),
    • Compact tree (10-15 feet),
    • Large shrub (more than 8 feet)

    Light Exposure:

    • Full sun (6 hrs direct light daily),
    • Partial sun/shade (4-6 hrs light daily)

    Native Locale:

    • Chicago area,
    • Illinois,
    • North America
  • Zelkova serrata (Japanese zelkova)

    A mature specimen of Japanese zelkova.

    Also known as:

    Japanese zelkova
    Japanese zelkova is closely related to elms but is resistant to Dutch elm disease (DED). It tolerates urban conditions well and can be used as a street tree. This tree has interesting bark, clean serrated foliage and good fall color.

    Size Range:

    • Large tree (more than 40 feet)

    Light Exposure:

    • Full sun (6 hrs direct light daily),
    • Partial sun/shade (4-6 hrs light daily)

    Native Locale:

    • Non-native

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